Calculator

Calculator 

• switch

#include<stdio.h>

int main()
{
    int a,b;
    char o;
    printf("Enter the numbers ");
    scanf("%d %d",&a,&b);
    printf("Enter the operation ");
    scanf(" %c",&o);//space has to be given to enter character
    switch(o)
    {
    case '+' :
        printf("The sum is %d",a+b);
        break;
    case '-' :
        printf("The difference is %d",a-b);
        break;
    case '*' :
        printf("The product is %d",a*b);
        break;
    case '/' :
        printf("The division is %d",a/b);
        break;
    case '%' :
        printf("The remainder is %d",a%b);
        break;
    }
    return 0;
}

Output -

Enter the numbers 4
5
Enter the operation +
The sum is 9

• If-else

#include <stdio.h>

int main()
{ int a,b;
  char o;
    printf("Enter the numbers ");
    scanf("%d %d",&a,&b);
    printf("Enter the operation ");
    scanf(" %c",&o);//space has to be given to enter character
    if(o='+')
   { printf("The sum is %d",a+b); }

    else if  (o='-') 
   { printf("The difference is %d",a-b); }

    else if  (o='*') 
   { printf("The product is %d",a*b); }
  
    else if  (o='/') 
   { printf("The division is %d",a/b); }
   
    else if  (o='%') 
   { printf("The remainder is %d",a%b); }

    else 
 printf("Enter valid operator");

    return 0;
}

Output -

Enter the numbers 4
5
Enter the operation +
The sum is 9
4321